road draft tube
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New User
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road draft tube
I am gonna install a turbo on my 1986 6.9l idi and i also want to do a cdr delete, i was wondering if instead of using the banks adapter could i weld on a port for the tube to connect to on the oil fill?
My turbo is an ats turbo not a banks so i would have to buy the seperate piece.
My turbo is an ats turbo not a banks so i would have to buy the seperate piece.
Postmaster
Joined: Nov 2008
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From: Buckley, WA
Weld a bung on oil fill tube and mount cdr directly to your intake tube if you don't have the valve cover or air box
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Joined: May 2013
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From: Salem, OR
Probably a dumb question, but since the cdr is basically crankcase ventilation and the diesel has unrestricted air intake, why can't you take a tube directly from a crank vent directly into the intake air stream? You could put it in above the filter or down were the cdr is located now.
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I was asking if it was a good idea to just weld a bung to the fill tube and run the road draft tube there.
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Joined: Nov 2008
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From: Sorrento BC, Canada
I would not run a road draft tube on it. I ran one on my fresh rebuilt 7.3 with no turbo and it caused main seal, valve cover, headgasket oil leaks. I put the cdr back on when I turboed it and it stopped the leaks. These engines create alot of blowby due to high compression ratio, and are designed to have vaccum in the crankcase vs pressure.
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Laughing Gas
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From: Virginia
Here is a video
If this guy is burning oil he may have other problems than an old CDR.
IMO: I think the draft tube in this video eventually will produce road contamination. Unless properly designed, these draft tubes add to the road-surface oil hazard for all vehicles and motorcycle riders like myself. Plus, more potential oil on the road means more ground water contamination and, for this guy, a $90 CDR is a small price to pay for our cleaner water and safety.
If this guy is burning oil he may have other problems than an old CDR.
IMO: I think the draft tube in this video eventually will produce road contamination. Unless properly designed, these draft tubes add to the road-surface oil hazard for all vehicles and motorcycle riders like myself. Plus, more potential oil on the road means more ground water contamination and, for this guy, a $90 CDR is a small price to pay for our cleaner water and safety.
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All the CDR is, is a diaphragm so that when 'too much' air is going through it (high RPMS or a run away) it is supposed to shut. The thing is all but straight through, i would say it does little to nothing as far as pulling the oil out and returning it to the engine.
The engine in our 92 lost 10qt in 86 miles with the CDR off (hose from valve cover wasnt hooked up after shop did the oil change.) it was litteraly nothing more than a RDT. Granted it has lots of miles (minimal blowby) and the rear seal leaks anyway.
The engine in our 92 lost 10qt in 86 miles with the CDR off (hose from valve cover wasnt hooked up after shop did the oil change.) it was litteraly nothing more than a RDT. Granted it has lots of miles (minimal blowby) and the rear seal leaks anyway.
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